chore: address some clippy concerns

driver/kasa/src/connection.rs

@@ -186,8 +186,7 @@ async fn send_request<
     let incoming_length = reader.read_u32().await.context(ReadSnafu)?;
     tracing::info!(?incoming_length);
 
-    let mut incoming_message = Vec::new();
-    incoming_message.resize(incoming_length as usize, 0);
+    let mut incoming_message = vec![0; incoming_length as usize];
     reader
         .read_exact(&mut incoming_message)
         .await

driver/kasa/src/messages.rs

@@ -178,7 +178,7 @@ impl<'de> Deserialize<'de> for MaybeKelvin {
         match u16::deserialize(deserializer)? {
             0 => Ok(MaybeKelvin(None)),
             value => {
-                let kelvin = Kelvin::try_from(value).map_err(|e| {
+                let kelvin = Kelvin::try_from(value).map_err(|_e| {
                     serde::de::Error::custom(format!(
                         "{value} is not in the range {}..{}",
                         Kelvin::MIN,